How to Update NETGEAR EX3700 Firmware

Dual-antenna wall-mount WiFi extender technical sketch and port diagram for Netgear EX3700

Dual-Antenna Range Extender

Hardware Safety & Status

Netgear EX3700 Firmware Guide

Monitor your device's Power and System LEDs during the upgrade process. Keep the device plugged in and connected via Ethernet or stable WiFi until the reboot cycle finishes.

Solid Power LED Stable Network Do Not Unplug

Updating firmware keeps your EX3700 secure and improves performance and compatibility with newer routers.

Step 1: Download the Correct Firmware

On a computer, go to the official NETGEAR Support / Download Center.
Search for EX3700 and open the Downloads section.
Download the latest firmware ZIP file for EX3700 and save it.
Unzip the file and locate the firmware file (often ending in .chk or .img).

Step 2: Connect to the Extender

Ensure the EX3700 is powered on and stable.
Connect your computer to the extender via WiFi (NETGEAR_EXT or the extended SSID) or via the Fast Ethernet port.
Temporarily disable any VPN or proxy software that might block access to the management page.

Step 3: Log In to the EX3700 Dashboard

Open a browser and go to http://mywifiext.net or the extender IP (such as 192.168.1.250).
Log in with your admin username and password (default usually admin / password unless changed).

Step 4: Upload the Firmware File

Navigate to the Firmware Update or Maintenance > Firmware Upgrade section.
Click Browse or Choose File and select the firmware file you unzipped.
Click Upload or Update to begin the firmware upgrade process.

Important: Do not unplug the extender or router and do not close the browser while the firmware is being uploaded and installed.

Step 5: Wait for Reboot and Confirm Version

Wait for the EX3700 to reboot; the Power LED will turn solid when it is ready.
Log back into the dashboard and check the firmware version on the Status or Firmware page to confirm the update.

Step 6: Test WiFi After Update

Test WiFi coverage and speed in the extended area to ensure stable performance.
If any issues appear after updating, perform a soft reset and verify the extender’s placement and router WiFi settings.